STORY HIGHLIGHTS

A triple suicide bombing at Istanbul's international airport left 41 people dead, 13 of them foreign nationals, and 239 wounded

Turkey declared Wednesday a day of national mourning over a deadly attack at Istanbul's international airport blamed by the government on Islamic State jihadists.

The government has ordered flags at half-staff. Turkey declared three days of national mourning after a twin sucide bombing killed over 100 people in the Turkish capital Ankara in October last year, again blamed on the IS group.

A triple suicide bombing at Istanbul's international airport left 41 people dead, 13 of them foreign nationals, and 239 wounded, the city governor said in a statement.

The governor's office said 109 of the 239 wounded were discharged from hospital.

It said 13 of the dead were foreigners.

A Turkish official, speaking on condition of anonymity, said 5 of the dead were from Saudi Arabia, 2 were from Iraq, and 1 from Tunisia, Uzbekistan, China, Iran, Ukraine and Jordan.

Turkey remains on high security alert after a series of attacks on its soil blamed not only on the IS group but also Kurdish militants.